The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2014
Filed:
Aug. 28, 2012
Tomoko Hibino, Nagoya, JP;
Tomoko Hibino, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A liquid ejection apparatus includes: a passage unit, a piezoelectric actuator, a drive signal generator, a driver, a voltage value changing unit, and an interval setting unit. The piezoelectric actuator applies energy to liquid in the passage unit. The drive signal generator generates a drive signal to be supplied to the piezoelectric actuator, based on a reference voltage value. The driver supplies the drive signal generated by the drive signal generator to the piezoelectric actuator. The voltage value changing unit changes the reference voltage value to a larger voltage value every time an accumulated time during which a voltage is applied between electrodes of the piezoelectric actuator satisfies a predetermined condition. The interval setting unit determines a new time interval to a next change of the reference voltage so that the new time interval is shorter than before, every time the reference voltage value is changed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile